When Data Becomes the Deal: CFIUS, Sensitive Personal Data, and Cross-Border Risk

HaystackID Blog | November 3, 2026
When Data Becomes the Deal: CFIUS, Sensitive Personal Data, and Cross-Border Risk

Editor’s Note: When foreign investors acquire U.S. companies that hold sensitive personal data, the transaction can hand a foreign owner insights that traditional intelligence methods struggle to obtain. The Committee on Foreign Investment in the United States (CFIUS) has evolved from a little-known review process into a front-line regulator, from the 1988 Exon-Florio Amendment through the Foreign Investment Risk Review Modernization Act (FIRRMA) and the 2025 America First Investment Policy. Throughout the article, author Aleida Gonzalez, Global Advisory Managing Director at HaystackID®, examines why AI raises the stakes by making scattered data easier to aggregate, re-identify, and exploit, and outlines the factors CFIUS weighs when a deal involves sensitive personal data. Gonzalez explores how country designations under the DOJ’s Data Security Program shape transaction risk, and how China’s order to unwind Meta’s acquisition of Manus shows that foreign investment scrutiny now runs in both directions. Read the comprehensive coverage to learn practical steps that TID businesses can take to limit foreign control, strengthen security controls, and plan with counsel. The common thread is that regulators judge a deal by what the data could reveal and who could reach it, and companies that can prove their data is protected stand on firmer ground. 

When Data Becomes the Deal: CFIUS, Sensitive Personal Data, and Cross-Border Risk 

By Aleida Gonzalez, Global Advisory Managing Director, HaystackID®

When the Committee on Foreign Investment in the United States (CFIUS), an interagency government body that reviews foreign direct investment in the U.S., required Chinese gaming company Beijing Kunlun Tech Co., Ltd. to divest the dating app Grindr in 2019, its national security concern centered on protecting U.S. citizen information from exploitation by foreign nationals, particularly information on U.S. government employees. A foreign acquisition of a U.S. business or its information may appear to be routine business, as the Grindr acquisition did. Yet such transactions can provide foreign actors with access to sensitive information on U.S. persons, creating opportunities for misuse or exploitation. 

Why Data-Rich Deals Raise National Security Concerns 

A notable paradox of the digital age is that many consumers willingly provide private companies with vast amounts of personal information while remaining skeptical of sharing similar information with government institutions. In reality, commercial entities often collect, aggregate, and analyze data on a scale that exceeds the government’s direct access and authority, enabling them to build detailed profiles of individuals’ sensitive information, including behaviors, relationships, interests, and movements.  

As a result, a foreign entity’s acquisition of a data-rich company can present significant national security concerns, because access to commercially collected information may reveal insights that traditional law enforcement and intelligence methods struggle to obtain. U.S. businesses that manage critical technology, critical infrastructure, or sensitive personal data qualify as technology, infrastructure, and data (TID) businesses, and CFIUS may review a transaction that could give a foreign entity access to TID information. 

How CFIUS Moved From the Back Room to the Front Line 

Historically, CFIUS processes remained exclusive to those subject to CFIUS requirements and those working in the field, until heightened geopolitical tension and resulting congressional pressure for transparency shed light on the process and its requirements. Advocates for minimal transparency in CFIUS proceedings understand that, in addition to the need for secrecy when managing matters of national security, private CFIUS proceedings may also protect U.S.-owned businesses and, theoretically, the U.S. economy. 

Key events that compelled changes in the CFIUS process or involved congressional action include: 

  • 1988, the Exon-Florio Amendment. Congress addressed rising Japanese investment in U.S. technology by granting the president authority to block foreign transactions deemed a threat to U.S. national security.
  • 2007, the Foreign Investment and National Security Act. Congress enacted the law after Dubai attempted to invest in U.S. port operations.
  • 2018, the Foreign Investment Risk Review Modernization Act (FIRRMA). Congress enacted FIRRMA to protect U.S. national security from certain types of foreign investment, expanding CFIUS jurisdiction to include technology, infrastructure, “sensitive personal data of United States citizens,” and investments that could “exacerbate cybersecurity vulnerabilities.”
  • 2022, Executive Order 14083. The order provided CFIUS guidance on evaluating national security risks in foreign investment transactions, including supply chain resources and technologies such as AI, and U.S. persons’ sensitive data.
  • 2025, the America First Investment Policy. The policy addressed growing concern over People’s Republic of China (PRC) investments in the United States by proposing restrictions on foreign investment in U.S. technology, infrastructure, and personal data. 

AI Turns Scattered Data Into Intelligence 

Access to large volumes of data carries implications beyond national security, with potentially far-reaching effects on individuals by shaping how organizations use, analyze, and leverage personal information in ways that directly affect people’s lives. AI makes it easier to combine scattered information into intelligence, enabling bad actors to profile, blackmail, or target anyone. Many people believe they have nothing to hide and don’t think twice about sharing personal data until oversharing costs them heartache. 

With AI, organizations can process raw bulk data at greater speeds and potentially re-identify it, making it easier to catch a cheating spouse, gauge public sentiment, or help insurance companies charge higher premiums to people who increase their own risk exposure by driving too fast, spending too much, or eating out too often. When foreign nations collect data on U.S. persons and infrastructure, the problem grows, as bad actors and foreign entities may weaponize personal information for economic, technological, or social advantage. CFIUS’s concern reflects the increasing ease, speed, and affordability of using information to influence or disrupt. 

What Counts as Sensitive Personal Data 

Under the FIRRMA and its implementing regulations, CFIUS treats a business as holding sensitive personal data when that data falls into one of ten categories, including financial, health, geolocation, biometric, communication, and personal identification data, and the business targets or tailors products to U.S. national security agencies or personnel, maintains or collects that data on more than one million people, or intends to do so. Corporations that generally maintain sensitive data include major retailers, social media websites, businesses that offer genetic testing, major pharmacies, and search engines. 

The Questions CFIUS Asks About Data 

Some factors CFIUS may consider include: 

  • Country designation: Whether the foreign investor is from a country of concern, a special watch list country, or another jurisdiction associated with heightened national security risks.
  • Threat: Whether the investor poses a potential threat; whether the investor has ties to foreign governments, military organizations, intelligence services, or entities that may raise national security concerns; and the likelihood that the investor could exploit access to sensitive data.
  • Vulnerability of the U.S. business: What types of data does the U.S. business hold? How much data does it maintain, and about whom? How sensitive is the information, and what harm could result if the investor gained access to it?
  • Data aggregation and enrichment potential: Could the investor combine the acquired data with other publicly available, commercially available, or government-obtained datasets to create more comprehensive profiles of U.S. persons, critical infrastructure personnel, government employees, or members of the military and intelligence communities?
  • Access and control rights: Will the transaction provide the foreign investor with direct access to sensitive data, board representation, observer rights, decision-making authority, or other means to influence how the business collects, stores, protects, or shares the data? Who is gaining access?
  • Data transfer and storage risks: Will the business transfer, process, store, or allow access to sensitive data outside the United States, and if so, what safeguards prevent unauthorized access by foreign governments or affiliated entities?
  • Impact on U.S. persons: Could someone use the data to identify, track, profile, target, influence, coerce, or blackmail U.S. persons, particularly individuals with access to sensitive government information or critical technologies? 
  • Cybersecurity posture: Are adequate controls in place to secure the data against unauthorized access, exfiltration, cyber intrusion, or insider threats? Would the transaction increase the risk of a cybersecurity compromise?
  • Scale and persistence of data collection: Does the company continuously collect data, and does its business model enable the long-term accumulation of information that could provide strategic intelligence value over time?
  • National security consequences: How could someone exploit the information, and what consequences are likely to result? How could access to the data affect U.S. national security interests? Could the information support intelligence collection, influence operations, surveillance activities, military planning, or the identification of vulnerabilities within the U.S. government, defense industrial base, or critical infrastructure sectors? 
  • Mitigation feasibility: Can data access restrictions, governance controls, proxy arrangements, third-party monitoring, data localization requirements, or other mitigation measures effectively address the identified risks, or do the risks warrant a recommendation to block or unwind the transaction? 

Why Country Designations Matter 

Under the Department of Justice’s Data Security Program, which took effect in April 2025 and restricts transfers of bulk U.S. sensitive personal data, the Attorney General, with the concurrence of the Secretary of State and the Secretary of Commerce, designates countries of concern. Those designations rest on a demonstrated pattern of conduct adverse to U.S. national security and a significant risk that the country will exploit government-related or bulk U.S. sensitive personal data to the detriment of the United States or its citizens. Violations of the program can carry civil and criminal penalties. 

Separately, the Department of State designates countries of particular concern, i.e., countries that have systematically and severely violated religious freedom under the International Religious Freedom Act, and maintains a special watch list of countries that engage in severe violations. These lists can change periodically, and countries often appear on multiple government lists, such as those maintained by the Office of Foreign Assets Control. 

Beyond traditional ownership concerns, transactions involving personal data require careful consideration of whether potential business partners connect to countries with specific U.S. government designations. These designations may signal heightened national security, geopolitical, regulatory, and reputational risks that can affect government review and mitigation strategies. 

The Risk Now Runs in Both Directions 

For years, U.S. dealmakers treated foreign investment review as a one-way street. Washington’s reviewer unwound completed deals, as it did with Grindr; Beijing’s rarely did. That changed this spring. 

On April 27, 2026, China’s National Development and Reform Commission ordered Meta and AI startup Manus to unwind a roughly $2 billion acquisition that had closed four months earlier. It was the first publicly announced AI-sector prohibition under China’s own foreign investment security review, a framework modeled on CFIUS. 

The review looked past corporate domiciles. Manus had moved its headquarters from Beijing to Singapore, yet regulators focused on where its technology, engineering talent, and data flows originated. Practitioners now expect Chinese national security clearance to function as a regular closing condition for cross-border tech deals. Diligence teams should ask where training data comes from, where core R&D sits, and whether a target restructured offshore. 

Three Ways TID Businesses Can Protect Themselves 

U.S. TID businesses that handle sensitive personal data can protect themselves by taking appropriate precautions, such as limiting foreign involvement and data exposure and implementing strict governance controls, before engaging in cross-border investments or transactions. 

Limit foreign ownership and control. Employ designated U.S. security officers, independent directors, or proxy holders to wall off foreign investors from data governance and operational oversight. Structure ownership, voting, and governance rights so foreign investors remain strictly passive, with no access to material non-public technical information, board seats or observer rights, or substantive decision-making authority over sensitive data operations. This structure reduces the likelihood that the transaction constitutes a covered control transaction or covered investment under CFIUS regulations. 

Implement robust security controls. Establish and maintain comprehensive security and privacy programs aligned with recognized frameworks, including data loss prevention capabilities and controls outlined by the National Institute of Standards and Technology or the International Organization for Standardization, to safeguard sensitive data, strengthen system security, and support ongoing compliance and risk management. Minimize the collection, aggregation, and retention of sensitive personal data. If the business requires sensitive personal information, consider isolating data storage and processing environments. 

Plan legal and transactional strategy proactively. U.S. businesses should discuss foreign transactions with their lawyers and evaluate foreign interests and investments. These discussions should address whether CFIUS jurisdiction exists and whether the transaction requires a filing. 

When CFIUS Approval Comes With Conditions 

Clearing CFIUS is often the beginning, not the end. Many approved transactions come with a National Security Agreement (NSA), a negotiated set of commitments that can restrict data access, require specific security controls, and require regular reporting to the CFIUS Monitoring Agencies (CMAs) assigned to the deal. Those obligations can last for years, and they rarely fit neatly into existing compliance programs. 

In practice, NSA compliance often depends on independent parties. An agreement may require a third-party monitor to oversee daily compliance, an independent security inspector to test software and network integrity, or an auditor to confirm that mitigation measures work as intended. Each role demands both technical depth and regulatory fluency, and each must earn the monitoring agencies’ confidence. Companies that treat NSA obligations as an operational discipline, with clear data access controls, documented decisions, and early remediation, stand on firmer ground than those that treat them as a reporting exercise. 

HaystackID’s Global Advisory team supports organizations in each of these roles, bringing together technologists, former practicing attorneys, and cybersecurity experts with experience reporting directly to CMAs. That experience matters because every NSA is different, and monitoring agencies expect companies to spot and address issues before they escalate. By combining cybersecurity testing, information governance, and compliance reporting, our experts help organizations meet their NSA obligations while keeping day-to-day operations on track. Our cross-functional approach pairs digital forensics, cyber investigations, and enterprise systems expertise with compliance reporting, so the same team that tests security controls can explain the results to monitoring agencies. That approach will become increasingly important as AI makes sensitive data easier to aggregate and exploit, because protecting U.S. persons’ information now depends as much on how data moves through a company’s systems as on who owns the company. 

Data Is the Deal 

The Grindr divestiture showed that a deal can close cleanly and still unravel years later because of the data underneath it. Since then, the stakes have only grown. FIRRMA, the America First Investment Policy, and the DOJ’s Data Security Program have widened U.S. scrutiny of who touches Americans’ data. China’s Meta-Manus order shows that foreign regulators now apply the same logic in reverse. 

For TID businesses, the lesson is the same on both sides of the border: regulators judge a deal by what the data could reveal and who could reach it. The companies best positioned for review know where their sensitive data lives, who can access it, and how they would prove those controls hold. Those who wait for a CFIUS letter may learn the answer at the cost of the deal itself. 

If a foreign investor came to the table tomorrow, could your organization show regulators exactly who can reach its most sensitive data, and how it knows? 

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HaystackID® solves complex data challenges related to legal, compliance, regulatory, and cyber requirements. Core offerings include Global Advisory, Cybersecurity, Core Intelligence AI™, and ReviewRight® Global Managed Review, supported by its unified CoreFlex™ service interface and eDiscovery AI® technology. Recognized globally by industry leaders, including Chambers, Gartner, IDC, and Legaltech News, HaystackID helps corporations and legal practices manage data gravity, where information demands action, and workflow gravity, where critical requirements demand coordinated expertise, delivering innovative solutions with a continual focus on security, privacy, and integrity. Learn more at HaystackID.com.

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SOURCE: HaystackID

Advisory Note: For companies that hold sensitive data on U.S. persons, CFIUS approval rarely marks the finish line. A National Security Agreement can bind an organization to years of data-access restrictions, security controls, and reporting to the CFIUS Monitoring Agencies (CMAs). Every commitment must withstand agency scrutiny while the business keeps running. Bridging that gap is where independent expertise earns its place. HaystackID’s CFIUS Compliance and Advisory Services support organizations as a neutral third party, serving as Third-Party Monitor, Independent Security Inspector, Third-Party Auditor, or Third-Party Provider. Its Global Advisory team of technologists, former practicing attorneys, and cybersecurity experts pairs security testing and source code review with compliance reporting grounded in direct experience with CMAs. Rather than treating national security compliance as a reporting exercise, HaystackID helps organizations build it into their day-to-day data protection. Organizations navigating a CFIUS review or National Security Agreement can connect with HaystackID’s team of experts to learn more.